diff --git a/core/modules/migrate/src/MigrateExecutable.php b/core/modules/migrate/src/MigrateExecutable.php
index a370623..50277b1 100644
--- a/core/modules/migrate/src/MigrateExecutable.php
+++ b/core/modules/migrate/src/MigrateExecutable.php
@@ -383,6 +383,7 @@ public function processRow(Row $row, array $process = NULL, $value = NULL) {
               $new_value[] = $plugin->transform($scalar_value, $this, $row, $destination);
             }
             catch (MigrateSkipProcessException $e) {
+              $value = NULL;
               $break = TRUE;
             }
           }
@@ -396,6 +397,7 @@ public function processRow(Row $row, array $process = NULL, $value = NULL) {
             $value = $plugin->transform($value, $this, $row, $destination);
           }
           catch (MigrateSkipProcessException $e) {
+            $value = NULL;
             break;
           }
           $multiple = $multiple || $plugin->multiple();